Ranitidine is used for treating certain conditions that cause your body to make too much stomach acid (e.g., Zollinger-Ellison syndrome). It is also used to treat ulcers of the small intestine that have not responded to other treatment.

How to use

Use Ranitidine as directed by your doctor.

Take Ranitidine by mouth with or without food.
Ask your health care provider any questions you may have about how to use Ranitidine.
Drug Class and Mechanism

Ranitidine is an H2-receptor blocker. It works by blocking the action of histamine in the stomach. This reduces the amount of acid the stomach makes. Reducing stomach acid helps to reduce heartburn, to heal irritation of the esophagus, and to heal ulcers of the stomach or intestines.

Missed Dose

If you miss a dose of Ranitidine and are using it regularly, take it as soon as possible. If it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not take 2 doses at once.

Storage

Store Ranitidine between 68 and 77 degrees F (20 and 25 degrees C). Brief storage at temperatures between 59 and 86 degrees F (15 and 30 degrees C) is permitted. Store away from heat, moisture, and light. Do not store in the bathroom. Keep Ranitidine out of the reach of children and away from pets.

Warnings/Precautions

Do not use Ranitidine if:

you are allergic to any ingredient in Ranitidine;
you have a history of porphyria (a blood disease).
Contact your doctor or health care provider right away if any of these apply to you.

Some medical conditions may interact with Ranitidine . Tell your doctor or pharmacist if you have any medical conditions, especially if any of the following apply to you:
if you are pregnant, planning to become pregnant, or are breast-feeding
if you are taking any prescription or nonprescription medicine, herbal preparation, or dietary supplement
if you have allergies to medicines, foods, or other substances
if you have a history of kidney or liver problems
if you have abnormal blood electrolyte levels or a history of irregular heartbeat.
Some MEDICINES MAY INTERACT with Ranitidine . Tell your health care provider if you are taking any other medicines, especially any of the following:
Certain benzodiazepines (eg, midazolam), glipizide, or procainamide because the risk of their side effects may be increased by Ranitidine
Certain HIV protease inhibitors (eg, atazanavir), dasatinib, delavirdine, gefitinib, itraconazole, or ketoconazole because their effectiveness may be decreased by Ranitidine

Possible Side Effects

Check with your doctor if any of these most common side effects persist or become bothersome:

constipation; diarrhea; headache; nausea; stomach upset.
Seek medical attention right away if any of these severe side effects occur:

If you have any questions about Ranitidine, please talk with your doctor, pharmacist, or other health care provider.
Ranitidine is to be used only by the patient for whom it is prescribed. Do not share it with other people.

I am always near food and aromas and that is why my stomach builds up acids and causes me burn sensations. It is a pretty uncomfortable feeling that prevents me from achieving my daily program. Since I started to use Ranitidine, that discomfort started to ease until it went away. Now I can go about my program without having to worry about my stomach.

Renee Walker, Des Moines, US

I've used so many treatments for my ulcer of the small intestine that I almost given up. One Sunday morning my sister brought me Ranitidine and told me to try it with confidence. Although I was skeptical, the first results came and renewed my trust in the medical world. The treatment works fast and it doesn't require any complicated restrictions.

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